Rock drill bit



FIG. 1 is top perspective view of a rock drill bit, showing my newdesign.

FIG. 2 is a bottom perspective view thereof.

FIG. 3 is a bottom plan view thereof.

FIG. 4 is a top plan view thereof.

FIG. 5 is a right side elevational view thereof.

FIG. 6 is a left side elevational view thereof.

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a rear elevational view thereof.

The evenly-broken dash-dash lines in the views depict environmentalfeatures only and form no part of the claimed design. The brokendot-dash lines in the views define the peripheral boundaries of theclaimed design and are not part of the claimed design.

CLAIM The ornamental design for a rock drill bit, as shown anddescribed.